Cream separator



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April 4, 1950 Original Filed Jan. 25, 19415 April 4, 1950 c E.DEAR-DORFF CREAM SEPARATOR 4 Sheets-Sheet 2 .Original Filed Jan. 25,1945 m m M Wu 2 Maw w fif E EMA a my Q Q (2. E. DEARDORFF CREAMSEPARATQR 'Apl il 4, 195.0

4 Sheets-Sheet 5 Original Filed Jan. 25, 1945 5 R MH VD T 2 T u a .1. Bm a 1. 7 7 1 April 4, 1950 c. E. DEARDO'RFF CREAM SEPARA'IfOR OriginalFi led Jan. 25, 1943 4 Sheets-Sheet 4 AT 7012M? Y5 Reissued Apr. 4, 1950CREAM SEPARATOR Clarence E. Deardorif, Sacramento, Calif., as-

signor to C. E. Deardorff, Inc., a corporation of California OriginalNo. 2,399,665, dated May '7, 1946, Serial No. 473,564, January 25, 1943.

Application for reissue August 30, 1946, Serial No. 693,843

Claims.

Matter enclosed in heavy brackets appears in the original patent butforms no part of this reissue specification; matter printed in italicsindicates the additions made by reissue The present invention relates toimprovements in a cream separator and it consists of the combinations,constructions and arrangements hereinafter described and claimed.

An object of my invention is to provide a cream separator which may beplaced in milk bottles or cartons that hold Whole milk. The separatorconsists of but one part and it does not interfere with the cream risingto the top of the container while the whole milk is standing. Theseparator coacts with the bottle to form a milk compartment and makesuse of a physical law to create a vacuum in the milk compartment toprevent the skim milk from being poured from the container while thecream is poured therefrom. The 1 container must be maintained in aparticular position during the pouring of cream. It is possible to pourall of the cream from the container without pouring any of the milk, or,if desired, a mixture of cream and milk can be poured at any time duringthe pouring by merely rocking the container about its longitudinal axisthrough an are not exceeding 90, thereby feeding air into the milkcompartment for releasing the vacuum.

The device does not make use of any moving parts such as flap valves andthe like and it may be used for separating other liquids of differentdensities Where the less dense liquid rises to the top of the container.It is possible to make the device a permanent part of the container aswhen it is used in a milk carton or a removable part as when it is usedin a milk bottle. It is also possible to use the device in a standardmilk carton or milk bottle and by means of a handle insert it in a milkbottle in which the cream has already separated itself from the skimmilk. The only point to keep in mind when using the device is to holdthe container in a certain position during the pouringoperation.

Other objects and advantages will appear in i the followingspecification, and thenovel features of the device will be particularlypointed out in the appended claims.

My invention is illustrated in the accompanying drawings forming a partof this application, in which:

Figure 1 is the longitudinal section taken alon the line I-I of Figure 2and shows the milk carton With one form of my device operatively appliedthereto;

Figure 2 is a front elevation of a carton;

Figure 3 is an isometric view of the device shown in a slightly modifiedform;

Figure 4 is a vertical section through a bottle showing my inventionplaced at the cream line;

Figure 5 is an isometric view of the cream separator used in the milkbottle; [and] Figure 6 is a cream separator supported by a handle;

Figure 7 is a longitudinal section taken through a modified form ofcarton, in which the partition members providing my cream separator arefashioned from the same blank that makes the carton;

Figure 8 is an elevation looking from the lefthand end of Figure 7, thecap being closed;

Figure 9 is a view similar to Figure 1, but illustruting the partitionmembers of my cream separator overlapping each other and the cartonswung beyond the horizontal;

Figure 10 is an elevation of the carton shown in Figure 9, as seen fromthe left of the latter, the cap being closed;

Figure 11 is a longitudinal sectional view similar to Figure 7, anddisclosing the cream separator partitions overlapping each other and thecarton moved beyond a horizontal position;

Figure 12 illustrates a modification of the cream separator disclosed inFigure 3, the view being a longitudinal section through a carton with mymodified creamseparator therein;

Figure 13 is an end elevation of Figure 12 and taken from the leftthereof, the cap being closed;

Figure 14 is an isometric view of the cream separator shown in Figures12 and 13;

Figure 15 is a view similar to Figure 12, but showing overlappingpartition members for the cream separator;

Figure 16 is an end elevation of Figure 15, looking from the left of thelatter and the cap closed;

' separator employed in Figure 18;

Figure 20 is a view similar to Figure 18, disclosing overlappingpartition members for the cream separator, and illustrating the bottlemoved beyond horizontal;

Figure 21 is an isometric view of the cream separator used in Figure 20;

Figure 22 is a longitudinal sectional view through a bottle, disclosinga modification of cream separator illustrated in Figure 6; and

Figure 23 is aview similar to Figure 22, the partition members of thecream separator overuppermost.

Zapping each other, and the bottle moved beyond the horizontal.

While I have shown only the preferred forms of my invention, it shouldbe understood that various changes or modifications may be made withinthe scope of the appended claims without departing from the spirit ofthe invention.

In carrying out my invention. I make use of a milk carton indicatedgenerally at. A in Figures 1 and 2. The carton may be of any shapedesired and made from any material that will hold a liquid. I do notwish to be confined to a milk carton because, as already stated, thedevice may be used to separate liquids of different densities.

The carton A has an opening I through which the fluid may be poured, anda cap 2 normally closes the opening. The cap is hinged at 3 to thecontainer top 4. It will be noted that the opening 1: is placed near onecorner of the carton.

The form of my invention shown in Figures 1 and 2 consists of twotransversely disposed partition members 5 and 6 that arev longitudinallyspaced from each other-to provide an aperture [on] or slot 1 which,as-shown, extends acrossthe width of the carton. The partition 5 isshown as of less area than the partition 6 and theedge 8 of thispartition is. placed near the side 9 of the carton. The partition 6 hasits edge I lying substantially in the same longitudinal plane as theedge 8, the plane extending parallel to the side 9. The partitionmembers and 6 maybe secured to the walls of the carton by anymeansdesired. I have shown the partition 5. provided with flanges, H and thepartition 6 withflanges l2.

These flanges are secured to the. carton walls by any. desired fasteningmeans. The. edge 8 is nearer the carton top than the edge 10. The twopartition members function as a single partition having an upwardlyopening aperture. or slot I the edges of which lie in substantially acommon plane extending at right angles. to the general plane of thepartition.

It will be observed that the partition members 5 and 6 arranged as shownin Figure 1- define an opening 1 which affords free communicationbetween a cream chamber l3 anda skim milkchamber ll of the carton, whichopening is ample in cross sectional area to permit rapid filling of thecontainer when upright and which due. to the disposition of the edges 8and [.9] 10. of the partition members one in. front of the other asdescribed, a body .of liquid is trapped behind the partition member 5when the carton is placed in the horizontal pouring position shown inFigure-1,

which body of liquid effectively seals. the edge Ill against passage ofair into the skim milk space [4 of the container and thus preventsdischarge of skim milk from behind said partition so long as thecontainer is maintained in this position. The partition 6- is' placed atthe cream line, for

' the milk. In other words when the container is feature of theinvention is the. provision of a mark- .or indicator I5 whichis placedon theside l6 of the carton in predetermined relation to the.

- opening I and this mark informs the person that if only the cream istobe. poured from the carton, the side of the car-ton with the.mark-mustbekept In other words it. is necessary that the upwardlyopening slot 1. be in a substantially horizontal position during the;vpouring if cream only is desired and that the edge 8 which is nearestthe top of thev container face upwardly as shown. It is possible toplacethe mark I 5 at the point; l5 a on, the top .4 of the carton ratherthan on the side I6 if desired. The person must keep the mark lie at thetop of the carton during the pouring operation in order that the slot 1will remainin a horizontal position and that the edge it will remain atthe lower half of the carton.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood.

In Figure l I showthe carton in pouring position with the slot I openingupwardly with the edges 8 and ll) of the slot lying in a substantiallyhorizontal plane and the cream compartment [3 empty. The cover 2 hasbeen opened and the cream poured from the opening I until thecompartment I3 is empty. The reason that only cream will be poured andno skim milk is that a vacuum is created in the compartment l4 duringthe pouring operation and air iseffectively sealed against ingress; intosaid space M underthe edge Illof the partition member. B-by the'body ofliquid trapped behind the partition member 5.. This vacuum is suflicientto, hold all of the skim milk in the compartment solong as the slot 1 iskept in a substantially horizontal plane. Inthis simple way the creammaybe separated from the milk. Any amount of skim milk can besubsequently dispensed by merely rocking the container about itslongitudinal axis; for swinging the slot! towarda vertical position. Theupper endof the slot 1- will permit air to enter the compartment l4 andrelieve the. vacuum. To the extent thatthe vacuum relieved; the skimmilk will pour from the. space It through the slot 1 and out through theopening I. In this way the pouring of the milk can be stopped at anytime by merely rockingthe container to swing'the slot back into ahorizontal position. It is not necessary to return the container to anupright position. A mere. rocking of the container about itslongitudinal axis prior to the complete removal of the cream. from the.space. 1.3 will cause the skim milk to pass through the slot I and mixwith the cream. By this procedure a mixture of milk and cream can be.delivered during the pouring operation and this mixture. can be of anyproportion desired.

' In Figure 3the cream separator indicated at B is in one piece. ratherthan in two partitions 5 and fi. The separator B comprises a partitionI6 that extends across the carton A and'has flanges I] by means of whichit is permanently secured to the carton. The partition l6 has a slot i8therein with one edge I'Ba curved upwardly and the adjacent edge l8bcurved downwardly respectively above and below the general plane of thepartition member. The edge 18a takes the place of' the edge 8: of thepartition 5 and the edge I8btakes the placesoftheedge ll) of thepartition 6! Carelshould be taken that when the cream separator I3 is,placed in the carton, the

flange l-lafbe placed .adiacentto the carton side 16 that carries themark t5. This will dispose the edge 1.8a, which isnearest-thecarton top,at

thelower half of the. container.

The operation of this form of thev device is identical to the:- form.already described. The slot l8 while maintained .:i n an upwardlyopensubstantially horizontal position durin the pouring operation bykeeping the carton side I6. and. mark: 15 uppermost will. create avacuum. in. the. milk. compartment. will permit the cream to bedischarged from, the cream .engaging with the wall 20'.

the skim milk in the bottle.

space while retaining the skim milk inthe milk space due to the sealingof the edge lBb by the 'milk trapped behind that part of the partitionterminating in the edge l8a. A rocking of the carton about itslongitudinal axis will cause the slot IB to swing toward a vertical.position and thus permit air to enter and relieve the vacuum in thespace M and permit the skim milk to be poured.

In Figure 4 I showmy device applied to a milk bottle indicated generallyat C. The neck -l9 of the bottle has a straight portion 20' thatfrictionally receives and supports my cream separator D. The separatoris shown in Figure and it has a circular partition or disc 26 and acircular flange 2| extending from one face of the disc. A slot 22extends diametrically across the partition and has its edge 22a curvedinwardly into the space defined by the flange 2| and its edge 22b curvedoutwardly. A marker 23 is placed on the flange 2| at a pointequidistance circumferentially from the ends of the slot and in positionto be [moved] above the upwardly opening slot [i8] 22 when the bottle isin pourin position.

The cream separator D is placed in the bottle and is frictionally heldin place by the flange 2! The bottle may now be filled with whole milkand the milk will pass through the slot 22 and into the bottom of thebottle. The slot 22 permits the cream to rise and the cream 24 will fillthe top of the bottle while the skim milk 25 will fill the bottom.Figure 4 illustrates the bottle cap removed and the bottle ready topour. seen through the glass bottle and the portion -of the bottleshowing this mark is kept on top during the pouring operation. This willcause the slot 22 to remain in a horizontal plane during the tilting ofthe bottle and will keep the edge 22b of the slot sealed in the body ofmilk trapped behind the edge 22a that is nearest the bottle top whilethe bottle is in a tilted posi tion. The cream can be poured oh and thevacuum created in the bottom of the bottle will hold The skim milk canbe poured while the cream is being poured or subsequently thereto bymerely rocking the bottle on its longitudinal axis for swinging the slot22 toward a vertical position when milk is desired. The device functionsin exactly the same manner as when used in the carton.

In Figure 6 I show another cream separator indicated generally at E.This separator is identical to that shown in Figure 5 except that it hasa handle 26 extending upwardly from the flange 2|. Like parts willtherefore be given similar reference numerals. The handle 26 is rigidlysecured to the flange 2! at a point on the flange which corresponds tothe position occupied by marker 23 on the separator D. When using thisdevice, the separator E can be moved slowly through the cream 24 withoutdisturbing it because the cream will flow through the slot 22. When thetop 26a of the handle reaches the rim 2! of the bottle, the creamseparator E will be at the required position, i. e., at the cream line.The bottle can now be tilted for removing the cream, care being takenthat the handle 26 remains at the portion of the bottle which will be onthe upper side of the bottle during the pouring operation. This willmaintain the slot 22 in a horizontal position. Only the cream will beremoved because the vacuum created in back of the separator will preventthe skim milk from The mark 23 can be tion is illustrated in Figures 7,8 and 11.

other side.

'being poured' A rocking of the bottle about its longitudinal axis willswing the slot 22 toward a vertical position and this will permit air toenter the skim milk compartment to relieve the vacuum, and allow theskim milk to pass through the slot22 and out from the bottle.

The partition in the container or bottle may be raised or lowered tochange the richness of the cream which is to be delivered. When thepartition is used in a carton, it will reinforce the carton to permitlarger cartons to be made and hold a greater quantity of whole milk. Thetwo partitions 5 and 5 could be formed from the same blank that makesthe carton. This construc- For example side I6 could be extended and theextended portion 16a folded back on itself and then the end bent atright angles to form the partition 6. In like manner the side 9 couldhave an extended portion 9a bent back on itself and the end'bent atright angles to form the partition 5. The top 4 could then be secured inplace.

Where two separate partitions 5 and 6 are used, the edges 8 and in mayoverlap each other about an eighth of an inch the desired amount toallow all of the cream to be poured from the chamber 13 without pouringany of the milk. The longitudinal axis of the carton is indicated at ain Figures 9 and 11. It will be noted that this azcis is inclined withrespect to the horizontal b. In other words, the partition 5 may extendtoward the interior of the container a greater distance than illustratedin Figures 1 and 7. Figures- 9, 10 and 11 disclose the partition members5 and 6' overlapping each other. When the edge 8 overlaps the edge H3 toa slight extent, the pouring angle with respect to either the transverseor longitudinal axis of the containermay be increased beyond thehorizontal position shown and the vacuum will still hold the skim milkin place in the manner clearly shown in Figures 9v and 11, This willallow all of the cream to be poured from the con.- tadner withoutpouring any of the milk, as previously set forth in the objects of myinvention. Rocking of the container about its longitudinal axis forswinging the slot 7 toward a vertical position permits the milk to bedispensed.

\ In the cream separator B it is possible to have two partitions likethe partitions 5 and 6, one of the partitions being flush with one sideof the flanges I1 and the other being flush with the The width of theflanges l'l determines the distance between the partitions. Thisarrangement is shown in Figures 12 to 17, in-

elusive. The cream separators in these views have been designated at B,and the flange or marginal strip by the reference numeral 17.

The flange or marginal strip 17 is in the nature of a loop. The flangeportion 17a in Figures 12 to 17, inclusive, is placed adjacent to thecarton side 16 that carries the mark 15. The partial partition membersin Figures 12 to 17, inclusive, are designated at 5 and 6' and the slottherebetween by the numeral 7 The partition mempartitions may overlapeach other slightly if desired, as shown in Figures 15, 16 andl7. Again,

the container may be swung until its longitudinal axis a is inclinedwith respect to the horizontal b. This will permit all of the cream tobe poured from the chamber 13, even though the container is rocked aboutits axis a slightly, without pouring any of the skim milk from thechamber 14. Also, the angular disposition of the carton A in Figure 15is more natural when pouring out the cream than a true horizontaldisposition, as suggested in Figure 12.

The same change can be made in the cream separators D and E wherepartial partitions may be placed on opposite ends [sides] of thecircular flanges 2|. These modifications will pro-- duce the creamseparators illustrated in Figures 18 to 23, inclusive.

In Figures .18 and 19, I show such a modified cream separator, which isdesignated at D. The milk bottle C again is provided with a neck 19having a straight portion 20' that receives and supports the creamseparator D in exactly the same manner as the separator D is supportedin Figure 4. The cream separator D includes a circular flange 21 havingpartial partitions 20a and 20b placed on opposite ends thereof so as toextend inwardly from opposing side sections of the bottle neck anddefining a slot 18' extending diametrically across the neck of thebottle. A marker 23' is placed on the flange at a point equidistancecircumferentiall'g from the edges of the slot 18, This. marker isdisposed above the upwardl yeopening slot 18' when the bottle is inpouringposition. The edge 22a takes the place of the edge 22a in Figure4, while the edge 22b is the equivalent of the edge 22b in Figure 4. 1*

The operation of the cream separator D is the same as that of the creamseparator D.

The construction of the cream separator D" in Figures 20 and 21' isidentical with the cream separator D just described in connection withFigures 18 and 19, excepting for the fact that the edges 22a and 22boverlap each other. This change will allow the longitudinal axis a ofthe bottle C to be swung into angular relation with respect to thehorizontal b, as shown in Figure 20. Accordingly, all of the cream maybe poured out of the cream chamber 24a over the rim 2? without pouringany of the milk 25 from the milk chamber. However, upon turning thebottle about its longitudinal axis a, milk will be delivered from thebottle.

The cream separator E in Figure 22 is the same as the cream separator Dshown in Figures 18 and 19 excepting that a handle 26' has beenconnected to the circular flange 21 at the same point as the marker 23is located in Figures 18 and 19. The top of the handle is designated at26a. the same reference numerals.

In Figure 23 I show a cream separator E" that is identical with thecream separator E, excepting that the edges 22a and 23b of the partialpartitions 20a and, 20b, respectively, overlap each other. Again thebottle C in Figure- 23 may be swung into a natural pouring position withits longitudinal axis a inclined. with respect to the horizontal b toallow pouring of all of the cream without discharging any of the skimmilk. Rotation of the bottle about its longitudinal axis a will permitpouring. of the milk.

I claim:

[1. An article of manufacture comprising a partition member having anedge flange adapted to frictionally engage the. inner wall of acontainer, said partition member being provided Corresponding parts havebeen given with a transversely extending elongated opening, the edgesdefining said opening being respec* tively curved in opposite directionsabove and below the general plane of the partition member and lying insubstantially a common plane ex.- tending substantially perpendicularlyto the plane of the partition member] [2. An article of manufacturecomprising a,

partition member having an upstanding flange around the peripheral edgethereof, said flange adapted to frictionally engage the inner wall of acontainer, said partition member being provided with a transverseopening extending substantially across the full width of the partitionmember, the edges defining said opening being respectively disposedabove and below the gencral plane of the partition member and lying in asubstantially common plane extending substam tiall perpendicularly tothe plane of the partition member] [3. An article of manufacturecomprising a circular partition member with a circular flange adapted toengage irictionally with the inner wall or? a container, said partitionmember being provided with an opening extending diametrically of thepartition member for substantially the full width thereof, the edgesdefining said opening being respectively curved in opposite directionsabove and below the general plane of the partition member and lying insubstantially a common plane passing through the longitudinal axis ofthe circular flange] 4. The combination with a transparent glass milkbottle having a neck portion, of [vacuum producing] a partition [means]removably disposed in the bottle at the juncture of cream and milkcontained in the bottle [cream line] for dividing [the] an upper creamcompartment from [the] a lower milk compartment, said partition [means]having [means defining] an elongated opening, the longer axis of saidopening being disposed transversely relative to the bottle, the edges ofsaid opening being spaced longitudinally of the bottle and lying in. aplane which substantially parallels the longitudinal axis of the bottle[container], the longer axis of the opening extending at right angles tothe bottle [container] axis, said bottle when [tipped] turned about thelonger [opening] axis of the opening from upright into pouring positionwhile maintaining the longer axis of the opening substantiallyhorizontal coacting with the partition and a body of milk at the openingand causing a vacuum to be formed in the lower compartment for trappingthe [liquid] mills contained therein and only permitting the [liquid]cream in the upper compartment to be dispensed, and a mark on thepartition [means and] viewable through the glass bottle for indicatinghow to maintain the longer axis of the opening in a substantiallyhorizontal plane while turning the bottle from upright into pouringposition .being' positioned substantially midway between the ends of theslot.

6. A milk bottle having a partition spaced from the upper end by adistance such that the capacity of the portion of the bottle above thepartition is about equal to the bulk of the cream contained in the wholemilk with which the bottle is intended to be filled, said partitionhaving [a] an elongated slot extending transversely of the partition andsubstantially throughout the extent thereof, the longer axis of saidslot being disposed transversely relative to the bottle, the edges whichdefine said slot being spaced longitudinally of the bottle and lyingsubstantially in a plane at right angles to the plane of the partition,and a mark on the partition and vi.ew able through the bottle forindicating how to [tip] turn the bottle from upright into pouringposition so that the longer [so that the longitudinal] axis of the slotwill remain in a substantially horizontal plane, said bottle when thusturned coacting with the partition and body of millc at the slot andcausing a vacuum to be [whereby a vacuum is] created in the bottleportion disposed below the partition for trapping the milk therein andonly cream will be delivered from the bottle, the milk being deliverablewhen the bottle is rocked on its longitudinal axis while in pouringposition to swing the slot toward a vertical position, thusbreaking thevacuum in the bottom of the bottle and permitting air to displace themilk.

7. A milk [bottle] container having a cream portion and a milk portionseparated from each other by a slotted partition, the partitionextending transversely relative to the container, said cream portionhaving a capacity to hold the cream contained in the milk with which the[bottle] container is intended to be filled, the edges which define theslot lying in a plane extending substantially at right angles to theplane of the partition and permitting the cream to rise to the top whenthe container is disposed in .to 'be created in the [bottle] containerportion disposed below the partition for trapping the milk and onlypermitting the cream which is above the partition to be poured, the milkbeing retained by the vacuum in back of the partition until the vacuumis broken by the [bottle] eon- .tainer being rocked on its longitudinalaxis for swinging the slot toward a vertical position and permitting airto enter in back of the partition, whereby milk will flow through theslot and out of the [bottle] container.

8. The combination with a milk bottle, of a separator adapted to passthrough the mouth of the bottle and extend transversely across thebottle at the juncture of cream and milk contained in the bottle andengage thebottle to form a wall for separating the cream from the milk,the

separator comprising a partition with a slot therein, the edges definingsaid slot being spaced longitudinally of the bottle and lying in a planeextending substantially at right angles to 'the .plane of the partition,a marker on the separator placed at a point to aid the operator inposiitioning [position] the edge of the slot lying nearest the bottletop at the underneathllower] M portion of the bottle during turning [thetilting] of the bottle from upright into pouring position [for pouringpurposes], said marker being viewable through the transparent bottle forindicating that the slot is maintained in a substantially horizontalposition during the pouring of the cream when the marker is held at thetop of the bottle during the pouring operation, said bottle when thusturned coaoting with the partition and a body of milk at the slot forcreating a vacuum in back of the partition to [whereby the vacuumcreated in the back of the partition will] prevent the milk from beingpoured.

9. A container having [for milk comprising] a cream portion and a skimmilk portion, a partition in the container extending-transverselyrelative to the container and placed at the juncture of the cream andmilk portions, the cream portion having a capacity about equal to thebulk of the cream contained in the whole milk with which the containeris intended to be filled, said partition having a slot extendingsubstantially across the width of the container, the slot being formedwith [by] one edge of the slot being [bent] disposed closer to thecontainer top than the other edge of the slot, with the two spaced edgesof the slot lyin in a plane that is substantially parallel with thelongitudinal axis of the container, said container when turned fromupright into [tilted in] a substantially horizontal position with theslot facing upwardly and said edges maintained substantiallyhorizontally coacting with the partition and a body of milk at the slotfor causing a vacuum to be created in back of the partition to retainthe skim milk while the cream is being poured, a rocking of thecontainer about its longitudinal axis to swing the slot toward avertical position during the pouring operation admitting air through theslot intov the milk portion and relieving the vacuum and permitting theskim milk to be poured.

10. A separator for use with a milk bottle having a cream portion and askim milk portion, said separator comprising a disc adapted to bepassedthrough the mouth of a bottle and extend transversely across thebottle at the juncture of cream and milk contained in the bottle and toengage with the inner wall of the bottle [at the cream line], said dischaving a slot that extends substantially across the width of the bottle,one edge of the slot being disposed closer to the bottle top than theother edge thereof, the two spaced 'edges lying in a plane substantiallyparallel with the longitudinal axis of the bottle, and a rigid handlerigidly fixed to the disc and of such length as to project beyond themouth of the bottle when the separator is at the juncture of the creamand milk [cream line], the handle being connected to the disc at a pointsubstantially equidistant from the ends of the slot and substantiallyperpendicular to the plane of the disc, and on that side of the slotwhose edge is more remote from the bottle top, whereby the maintainingof the handle at the uppermost side [top] of the bottle during theturning [tilting] of the bottle from upright into pouring position [forpouring] will maintain the slot edges in a horizontal position [line]and will dispose the firstmentioned slot edge at the underneath portion[bottom half] of the bottle, the bottle when thus turned coacting withthe disc and a body of milk at the slot and create [thus a creation of]a vacuum in the skim milk portion of the bottle that will permit onlythe cream to be poured, a.

rocking of the bottle about its longitudinal axis during any portion ofthe pouring operation [,1 swinging the slot toward a vertical positionand admitting air through the slot into the milk portion and releasingthe vacuum to permit skim milk to be poured from the bottle.

11. The combination with a liquid container for holding a liquid thatwill separate upon standing into two volumes of different densities, ofa [vacuum producing] partition [means] placed in the container at thepoint where the two volumes meet and extending transversely relative tothe container for dividing the container into an upper and a lowercompartment, the container having an opening communicating with theupper compartment, said partitions [means] having an elongated opening,the edges of said partition opening being spaced longitudinally of theaxis of the container and lying in a plane which substantially parallelsthe longitudinal axis of the container, the longer axis of the partitionopening extending transversely of the container at right angles to thecontainer axis, said container when turned from upright [whereby atipping of the container] into pouring position about the longer axis ofthe partition opening as a pivot [,1 while maintaining said longer axissubstantially horizontal will coact with the partition and a body ofliquid at the partition opening and will cause a vacuum to be formed inthe lower compartment [for] thus preventing the liquid in thiscompartment from passing through the opening in the [vacuum producing]partition [means] and into the upper compartment while the liquid in theupper compartment is dispensed through the container opening.

12. The combination with a [rectangularlyshaped] container having anopening in its top and near one side of the container, of a creamseparator comprising a partition [means] extending transversely acrossthe container and disposed the desired distance from the top to form anupper cream compartment and a lower milk compartment, said partition[means] including [means defining] an elongated opening, the longer axisof said elongated opening ea:- tending transversely relative to thecontainer, the edges of the partition opening lyin in a plane whichextends substantially parallel to the longitudinal axis of thecontainer, said partition opening having its longer axis lyingsubstantially parallel with the said side of the container, whereby saidcontainer when [swung] turned from upright into a substantiallyhorizontal pouring position while maintaining the longer axis of thepartition opening in a substantially horizontal position will coact withthe partition and a body of milk at the partition opening and create avacuum in the lower compartment to trap the liquid contained therein,thus permitting only the liquid in the upper compartment to bedispensed.

13. An article of manufacture comprising a partition member having anedge flange adapted to frictionally engage the inner side walls of acontainer with the partition member disposed transversely across thecontainer, the flange positioning the partition member transverselyrelative to the longitudinal axis of the container at a desired pointbetween the top and bottom of the container, said partition member beingprovided with a transversely-extending elongated opening, the edgesdefining said opening being respectively carved in opposite directionsabove and below the general plane of the partition v12 member and lyingin substantially a common plane extending substantially perpendicularlyto the plane of the partition member.

14. An article of manufacture comprising a partition member having anupstanding flange around the peripheral edge thereof, said flange beingadapted to frictionally engage the inner side walls of a containerwiththe partition member disposed transversely across the container, theflange positioning the partition member transversely relative to thelongitudinal axis of the container at a desired point between the topand bottom of the container, said partition member being provided with atransverse. opening substantiall across the ,full width of the partition member, the edges defining said opening being respectively disposedabove and below the general plane of the partition member and lying in asubstantially common plane extending sub stantially perpendicularly tothe plane of the partition member.

15. An article of manufacture comprising a circular partition memberwith a circular flange adapted to engage ,irictionally with the innerside walls of a container with the partition member disposedtransversely across the container, the flange positioning the partitionmember transversely relative to the longitudinal axis of the containerat a desired point between the top and bottom of the container, saidpartition member being provided with an opening extending diametricallyoi the partition member for substantially the full width thereof, theedges defining said opening being respectively curved in oppositedirections above and below the general plane of the partition member,and lying in a common plane passing through the longitudinal axis of thecircular flange.

16. The combination with a liquid container for holding a liquid thatwill separate upon standing into two volumes of difierent densities; ofpartial partition members disposed transversely in the containersubstantiallyat a point where the two volumes meet, and dividing thecontainer into an upper and a low'ercom'partment'; the container havingan opening communicating with the upper compartment; the partitionmembers extending inwardly of the container from opposing" sides of thelatter; the inner edge of one partition member being disposed closer tothe top of the container than the inner edge of the otherpartitiommember; said inner edges lying in a common plane which isparallel to the longitudinal axis of the container and defining a slotbe tween the compartments opening toward a side of the container; theuppermost partition member trapping a body of liquid therebehind whichfills the slot when the container is moved from upright into pouringposition and the container is held in a predetermined position; whichbody of liquid coacts with the partition members and container andefiectively prevents passage of air from the upper compartment into thelower compartment, whereby discharge of liquid from the lowercompartment is precluded due to creation of vacuum therein as lon as thecontainer is maintained in this predetermined position; the slot beingpositioned to allow entrance of air from the upper compartment to thelower compartment when the container is moved into another positionduring the pouring operation to break the liquid seal between said bodyof liquid and the inner edge of the lowermost partition member and thuspermit discharge of liquid from the lower compartment.

17. The combination with a liquid container for holding a liquid thatwill separate upon standing into two volumes of difierent densities;

of partial partition members disposed transverseposing sides of thelatter; the inner edge of one partition member being disposed closer tothe top of the container than the inner edge of the other partitionmember; said inner edges lying in a common plane which is parallel tothe longitudinal arts of the container and defining a slot between thecompartments opening toward a side of the container; the uppermostpartition member trapping a body of liquid therebehind which fills theslot when the container is moved from upright into pouring position andthe container is held in a predetermined position; which body of liquidcoacts with the partition members and container and effectively preventspassage of air from the upper compartment into the lower compartment,whereby discharge of liquid from the lower compartment is precluded dueto creation of vacuum therein as long as the container is maintained inthis predetermined position; the slot being positioned to allow entranceof air from the upper compartment to the lower compartment when thecontainer is moved into another position during the pouring operation tobreak the liquid between said body of liquid and the inner edge of thelowermost partition member and thus permit discharge of liquid from thelower compartment; and a marginal strip contacting with the inner sidewalls of the container and having the partial partition members securedthereto to provide a unitary structure of the strip and partialpartition members.

18. The combination with a liquid container; of partial partitionmembers transversely disposed in the container and dividing thecontainer into an upper and a lower compartment; the container having anopening communicating with the upper compartment; the partition membersextending inwardly of the container from opposing sides of the latter;the inner edge of one partition member being disposed closer to the topof the container than the inner edge of the other partition member; saidinner edges lying in a common plane which is parallel tothe longitudinalaxis of the container and defining an upwardly-facing slot between thetwo compartments when the container is turned from upright into pouringposition andv a predetermined s ide of the container is maintaineduppermost; the uppermost partition member trapping a body fiof liquidtherebehind which fills the slot when said predetermined side of thecontainer is maintained uppermost; which body of liquid codcts with thepartition members and container and effectively prevents passage of airfrom the upper compartment into the lower compartment, whereby dischargeof liquid from the lower compartment is precluded due to creation ofvacuum therein as long as the container is maintained in thispredetermined position; the slot being posi tioned to allow entrance ofair from the upper compartment to the lower compartment when thecontainer is moved into another predetermined position to breakthe'liquid seal between said body of liquid and the inner edge of thelowermost partition member and thus permit discharge of liquid from thelower compartment; the lower compartment having a liquid space belowboth partial partition members.

CLARENCE E. DEARDORFF.

' REFERENCES CITED The following references are of record in the file ofthis patent or the original patent:

UNITED STATES PATENTS Number Name Date 670,076 Hoffman Mar. 19, 19011,167,448 Van Amburgh Jan. 11, 1916 1,366,056 Burns Jan. 18, 19 211,722,396 Reiber July 30, 1929 1,794,596 Dowling Mar. 3, 1931 1,820,549Williams Aug. 25, 1931 2,052,941 Prevost Sept. 1, 1936 2,199,698Franzmeier May 7, 1940 2,239,092 Gammill Apr. 22, 1941 2,249,487 MusolfJuly 15, 1941 2,277,001 Hanson Mar. 17, 1942 2,279,419 Teunisz Apr. 14,1942 2,311,333 French Feb. 16, 1943 2,320,711 Bramhall -1 June 1, 19432,321,660 Courtney June 15, 1943 2,399,665 Deardorfi May 7, 1946 FOREIGNPATENTS Number Country Date 462,160 Great Britain Mar. 3, 1937

